.NET 9 upgrade

Author: cschotte

Build/SampleBuilder/SampleBuilder.csproj

@@ -2,17 +2,17 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>disable</Nullable>
     <FileVersion>1.3.0.0</FileVersion>
     <AssemblyVersion>1.3.0.0</AssemblyVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="HtmlAgilityPack" Version="1.11.68" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
-    <PackageReference Include="X.Web.Sitemap" Version="2.10.3" />
+    <PackageReference Include="HtmlAgilityPack" Version="1.12.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.3" />
+    <PackageReference Include="X.Web.Sitemap" Version="2.10.5" />
   </ItemGroup>
 
   <ItemGroup>